Marestail
# Marestail

Marestail (also mare's tail and mare's-tail) may refer to:

## Plants

* Conyza canadensis, an annual weed also known as horseweed and Canadian fleabane
* Equisetum, a fern ally also known as horsetail and pipeweed
* Hippuris, a genus of aquatic flowering plants, including:
   * Hippuris vulgaris, the common mare's-tail

## Other

* Mare's tail, a type of cirrus cloud formation
